Rust周报 404(译)

• this-week-in-rust
• 日期：2021-08-18
• 原文：404 期

你好，欢迎再来一期本周的螃蟹行情！Rust是一种追求三位一体的系统语言：安全性、并发性和速度。这是它的进展和社区的每周总结。有什么要说的吗？推特@ThisWeekInRust或向我们发送请求。 想参与吗？我们热爱贡献.

这本周的螃蟹行情是在在 Github 上公开的。如果你在本周的问题中发现任何错误，请提交 PR。 Rust*公开开发on GitHub.如果您在本周的问题中发现任何错误，please submit a PR.

In the case of this newsletter, 404 is indeed found!

Updates from Rust Community

Project/Tooling Updates

• rust-analyzer Changelog #90
• IntelliJ Rust Changelog #153
• Sixtyfps weekly report for 16th of August 2021
• Relm4 beta released 🎉
• This week in Fluvio #2: the programmable streaming platform
• This Week In TensorBase 15
• This week in Datafuse #2&This week in Datafuse #3
• nailing-cargo 1.0.0 - cargo wrapper for privsep, and for unpublished dependencies
• wgpu: Release of a Pure-Rust v0.10 and a Call For Testing
• [video] rg3d game engine v0.22 - feature highlights

Observations/Thoughts

• How to deal with large Cargo workspaces
• Instant word segmentation with Rust
• How to write fast Rust code
• Rust GUI Infrastructure
• Adding middleware support to Rust reqwest
• Understanding #[derive(Clone)] in Rust
• Going from Haskell to Rust
• [video] async engines in c++20, rust, & zig
• [video] flutter/rust roundtable

Rust Walkthroughs

• 一个比喻，帮助我了解 the borrow checker
• 快速端口扫描，in 100 lines of Rust
• RPC to call a Runtime API easily in Substrate
• Writing a lambda in Rust using lambda-runtime and aws-sdk-rust
• Daily Rust: Slice Patterns
• Learning Rust by building an SSH cli tool
• Getting started with Rust programming language 🦀 2021: 4. Building a CLI app in Rust
• Index 1,600,000,000 Keys with Automata and Rust
• Complex Procedural Rust Macros
• Getting Started with Systems Programming with Rust (Part 1)
• Deploy a Jamstack site on AWS Lambda with API Gateway in 10 minutes or less
• Rust Type Conversion (Part 1)
• Rust on RISC-V BL602: Simulated with WebAssembly
• Rust Type Lists
• Tag input assistant for \<select> elements in Rust/wasm
• Exploring serde’s data model with a toy deserializer
• LLVM internals, part 1: the bitcode format
• LLVM internals, part 2: parsing the bitstream

Research

• [video] ghostcell: separating permissions from data in rust

Miscellaneous

• Rust 2021 close to stabilization, currently testing all public crates (10,000 done so far)
• Calling WebAssembly from Rust
• Upcoming error message formatting enhancements in Rust 1.56
• Transforming streaming data in real-time with WebAssembly

Crate of the Week

本周的箱子是synth，一个用 Rust 编写的声明性，测试数据生成器。

llogiq无耻地使用了他最近的自荐，因为没有其他建议。

Please submit your suggestions and votes for next week！

Module of the Week

继续Rust Module of the Week，这周是std::fs Part 2: Dirs, Dirs, Dirs.欢迎投稿和反馈here.

Call for Participation

一直想为开源项目做贡献但不知道从哪里开始？每周我们都会重点介绍来自 Rust 社区的一些任务，供您挑选并开始使用！

其中一些任务可能还有可用的导师，请访问任务页面了解更多信息。

• GitUI 有一个易于上手的代码库、指导和good-first-issues waiting
• getsynth/synth - Support postgres json and jsonb types
• ockam-network/ockam - Like ngrok, but using Ockam

如果您是 Rust 项目所有者并且正在寻找贡献者，请提交任务here.

Updates from Rust Core

197 个拉取请求是merged in the last week

• make deleted code in a suggestion clearer
• point to where clause for GATs to add bound
• use smaller spans when suggesting method call disambiguation
• use a more accurate span on assoc types WF checks
• constify implementations of (Try)From for int types
• add automatic migration for assert!(.., string)
• fix closure migration suggestion when the body is a macro
• associated functions that contain extern indicator or have #[rustc_std_internal_symbol] are reachable
• LLVM codegen: don’t emit zero-sized padding for fields
• uplift the invalid_atomic_ordering lint from clippy to rustc
• run RemoveZsts pass at mir-opt-level=1
• implement black_box using intrinsic
• specialize Vec::clone_from for Copy types
• add support for clobber_abi to asm!
• deprecate llvm_asm!
• add the Option::unzip() method
• test and fix size_hint for slice’s (r)split* iterators
• implement Extend<(A, B)> for (Extend<A>, Extend<B>)
• cargo: teach cargo to failfast on recursive/corecursive aliases
• cargo: fix value-after-table error with profiles
• cargo: ability to specify the output name for a bin target different from the crate name
• clippy: never_loop: suggest using an if let instead of a for loop
• clippy: properly handle Self type for trivially_copy_pass_by_ref
• clippy: check expr usage for manual_flatten
• clippy: fix manual_map non-compiling suggestions
• clippy: fix false positive on filter_next
• clippy: fix nonstandard_macro_braces false positive
• clippy: use avoid-breaking-exported-api configuration in types module
• clippy: add unwrap_or_else_default lint

Rust Compiler Performance Triage

一个相当忙碌的一周，这是预料之中的，因为我们已经调整我们的算法，我们是否将变化标记为退步。大多数退步都相对较小，只有一个尚未以某种方式解决。

分流完成 @rylev.修订范围：6b2050..aa8f27

总共进行了 59 次比较，3 次退步、2 次改进、2 次混合；其中 0 个汇总

Full report here.

Approved RFCs

Rust 的变化遵循 RustRFC (request for comments) process.这些是本周批准实施的 RFC：

本周没有 RFC 获得批准。

Final Comment Period

每周the team宣布正在达成决定的 RFC 和关键 PR 的“最终评论期”。现在就发表你的意见。

RFCs

目前没有 RFC 处于最终评论期。

Tracking Issues & PRs

• [disposition: merge] stabilize “force warn” option

New RFCs

• RFC: let-expression

Quote of the Week

Rust：你不能移动你的对象，还要试着保持它。
我: 好的，我想我可以克隆它吗？
Rust: 那么要，实现一个 clone 方法。
我: 为什么我会出现堆栈溢出？
Rust：克隆方法调用自身，从来都不是一个好主意。
我: 我只是想简化琐碎的情况。
Rust: 克隆方法调用自身，仍然不是一个好主意。
我: 我不敢相信我已经陷入了这种境地。

– Oliver Ruebenacker on rust-users

Thanks to MBartlett21 for the suggestion!

Please submit quotes and vote for next week!

This Week in Rust is edited by: nellshamrell, llogiq, and cdmistman.

Discuss on r/rust